28364385

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 54720000

約数和(自身を除く): 26355615

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 49, 105, 111, 147, 149, 185, 245, 259, 343, 447, 555, 735, 745, 777, 1029, 1043, 1295, 1715, 1813, 2235, 3129, 3885, 5145, 5215, 5439, 5513, 7301, 9065, 12691, 15645, 16539, 21903, 27195, 27565, 36505, 38073, 38591, 51107, 63455, 82695, 109515, 115773, 153321, 190365, 192955, 255535, 270137, 578865, 766605, 810411, 1350685, 1890959, 4052055, 5672877, 9454795, 28364385]

約数ペア:

[(1, 28364385), (3, 9454795), (5, 5672877), (7, 4052055), (15, 1890959), (21, 1350685), (35, 810411), (37, 766605), (49, 578865), (105, 270137), (111, 255535), (147, 192955), (149, 190365), (185, 153321), (245, 115773), (259, 109515), (343, 82695), (447, 63455), (555, 51107), (735, 38591), (745, 38073), (777, 36505), (1029, 27565), (1043, 27195), (1295, 21903), (1715, 16539), (1813, 15645), (2235, 12691), (3129, 9065), (3885, 7301), (5145, 5513), (5215, 5439)]